227618628 has 12 divisors (see below), whose sum is σ = 531110160. Its totient is φ = 75872872.

The previous prime is 227618621. The next prime is 227618659. The reversal of 227618628 is 826816722.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 227618628.

It is not an unprimeable number, because it can be changed into a prime (227618621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9484098 + ... + 9484121.

It is an arithmetic number, because the mean of its divisors is an integer number (44259180).

Almost surely, 2^227618628 is an apocalyptic number.

It is an amenable number.

227618628 is an abundant number, since it is smaller than the sum of its proper divisors (303491532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

227618628 is a wasteful number, since it uses less digits than its factorization.

227618628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18968226 (or 18968224 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 227618628 is about 15087.0350963998. The cubic root of 227618628 is about 610.5706636762.

The spelling of 227618628 in words is "two hundred twenty-seven million, six hundred eighteen thousand, six hundred twenty-eight".